A company that sells radios has yearly fixed costs of $600,000. It costs the company $45 t...

A company that sells radios has yearly fixed costs of $600,000. It costs the company $45 to produce each radio. Each radio will sell for $65. The company’s costs and revenue are modeled by the following functions, where x represents the number of radios produced and sold:

Find and interpret ( R − C)(20,000),(R − C)(30,000), and ( R − C)(40,000).